Rowlock.



PATENTED OCT. 20, 1903. J. R. SUPPLE.

ROWLOOK.

APPLICATION FILED NOV. 1. 1902 N0 MODEL.

HOT uwodwasumcaon o c UNITED STATES Patented October 20, 1903.

PATENT OFFICE.

ROWLOCK.

SPECIFICATION forming part of Letters Patent No. 741,850, dated October 20, 1903.

Application filed November 1, 1902. Serial. No. 129,754. (No model.)

To aZZ whom it may concern:

Be it known that I, JOHN R. SUPPLE, a citizen of the United States, residing at 1607 Ninth avenue east, Oakland, in the county of Alameda and State of California, have invented a certain new and useful Oounterbalance- Rowlock; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to certain improvements in rowlock s; but, to be more specific, it is a counterbalancerowlock which, as the name indicates, effects the pivoting of the oar as if the latter were counterbalanced.

'By the use of my invention the oar is held comparatively snug in the lock, thereby preventing the destructive gouging of the oar, which occurs with the ordinary look as the car is dipped or withdrawn from the water.

In carrying out my invention-I have aimed at structural simplicity and durability, and besides accomplishing these results the lock is absolutely noiseless in its action and can be operated with the utmost ease.

Other objects and advantagesof the invention will be noted as the following specifications are gone over in connection'with the accompanying drawings, in which- Figure 1 is a perspective view of the complete rowlock. Fig. 2 is a central section of the lock on the line 00 w of Fig. 3. Fig.1 3 is a section of a modification on the line 3 y of Fig. 2. Fig. 4'. is a similar View of another modified form of construction.

Referring now to the above views by letter, A represents the stem of the lock, which is tapered toward its lower extremity, where it is formed with a perforation a, the latter being adapted to hold a cord for the purpose of retainingthe stem within the usually-constructed socket. The upper end or head 13 of the stem A is cut out to receive the cross-arm O, the latter being retained in position in the head 13 by means of the crosspin D. At both extremities of the crossarm 0 is integrally formed a yoke E, which is curved to snugly hug the periphery of the oar.

Now it is manifest that as the smallest portion of the oar is inserted between the open fingers of the yoke E and slipped down until the usual leather button is reached the oar will be held firmly and prevented from leaving the look, while the usual dipping, pulling, feathering,and other manipulation of the oar can be accomplished with but minimum amount of labor, and at the same time the action of the parts are noiseless.

In Fig. 2 I have represented the oar by means of dotted lines and the leather buttons by broken lines.

It will be further noted that as the yokes E are equidistant from the central pivotal point the parts act as a counterbalance, and thereby add to the general advantages of the lock.

In Fig. 3 I have shown one finger of the yoke with a straight surface, which is especially designed for race-boats, where it is of utmost importance that the cars act in unison and receive the same angle.

In Fig. 4. both fingers of the yokes are square with the base to receive a square nonfeathering oar.

It will be noted that the central portion 1) of the upper surface of the cross-arm c is dished out to prevent contact with the car and unnecessary wear.

Having thus fully described my invention, the operation and many advantages of the same will,it is thought,be readily understood.

What I claim, and desire to secure by Let ters Patent, is-- A rowlock formed with a suitable stem, a cross-arm pivoted to said stem and at essentially right angles thereto, a yoke at each extremity of said stem and equidistant from said pivot, said yokes being open at their upper portions to receive the oar for the pur' pose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN R. SUPPLE.

Witnesses:

GEORGE PATTISON, ORPHA C. POOR. 

